Controlling mechanism.



W. A. DOBLE.

CONTROLLING MECHANISM.

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Patented June 6, 1911.

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GDNTBDLLING MECHANISM.

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Patented Junie 6, 1911.

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UNITED stra'rns PATENT o F oE.

WILLIAM A. DOBLE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO MAY E.DOBLE, OF SAN FRANCISCO, CALIFORNIA.

CONTROLLING MECHANISM.

Specification of Letters Patent.

Patented J mu: 6, 1911.

Application filed January 18, 1910. Serial No. 538,645.

T 0 (ZZZ whom it may concern:

Be it known that I, \VILLIAM A. DOBLE, a citizen of the United States,and resident of San Francisco, county of San Francisco, State ofCalifornia, have invented certain new and useful Improvements inControlling Mechanisms, of which the following is a specification.

This invention relates to controlling mechanism of the type in which acontrolled member arranged to be connected to a plurality of controllingmembers which may be hand or power operated.

This invention is particularly applicable to water wheels for thepurpose of regulating the speed of the wheel, which in impact waterwheels is accomplished by controlling the discharge of the nozzle.\Vhere the speed of the water wheel is controlled by controlling thenozzle, this may be accomplishedby moving the nozzle bodily so as todirect the stream against or away from the buckets on the wheel, or thedischarge may be regulated by means of a regulating needle. T he aboveregulating means are shown in my prior Patents 926,055, granted June 22,1909, and (360,789, granted October 30, 1900.

lVhere the water wheel is large considerable powcr is required tooperate the regulating means, and in view of the fact that some positiveform of clutch must be used to clutch the controlling members to thecontrolled member, considerable power is required to shift the, clutchout of engagement; due to the frictional resistance between the engagingfaces of the clutch, and between the shiftable member and the controlledshaft.

The object of this invention is, therefore, to construct a controllingmechanism in which the clutches may be readily shifted, and in whichfrictional resistance will be eliminated.

The invention will be described in connection with the accompanyingdrawings, in which Figure 1 is a longitudinal section through thecontrolled shaft and the parts mounted thereon; Fig. 2 is a section onthe line 2-2 Fig. 1, and Fig. 3 is a section on the line 3-3 Fig. 1.

Referring to the drawings, 10 designates a controlled member, which inthis case is a shaft mounted in bearings 11on a base plate 12. Thisshaft 10 is arranged to be connected to the member which is'to becontrolled. for instance, it may be connected to the mechanism formovingthe nozzle, or to the needle for regulating the discharge of the waterfrom the nozzle in the patents referred to. It is, however, to beunderstood that this invention is notto be limited to the specific usesmentioned, but may be used generally.

The shaft 10 has loosely mounted upon it an arm 13. which isrestraincdfrom endwise movement by means of the bearing 11 and a collar14 rigidly connected to the shaft. A rod 15 is pivotally connected atone end to the arm 13. the other end being threaded and extendingthrough a threaded collar on the hand wheel 16, the hand wheel andcollar being mounted for rotation in a support mounted to turn ontrunnions 17 in bearings on a hollow stand 18.' Another arm 19 isloosely mounted uponthe shaft 10, and restrained from endwise movementby means of the bearing 11 and a collar 20, rigidlyconnected to theshaft. The end of the arm is pivotally connected to a rod 21, whichleads to a suitable governor, so that the arm 19 is arranged to be movedand operated by the governor.

A sliding clutch member 22 is splined on the shaft 10 by means of a key23, and is arranged to be shifted longitudinally by means of a handle2-1 pivoted at 25 on the base plate 12. The clutch member 22 and the arm13 form two members of a claw coupling. each being provided withsuitable interlocking jaws 26 and 27. A second clutch member 28 issplined on the shaft and arranged to be shifted by means of a handle 29pivoted at 30 on the base plate. The member 28 and the arm 19 similarlyform two members of a claw coupling, the engaging faces being providedwith interlocking jaws 31 and 32. As will be seen by reference to Fig.1, the clutch members 22 and 28 are of such length and so related toeach other that both cannot be out of operative engagement with the arms13 and 19 at the same time. A suitable bracket is secured to the stand18 and provided with an arm 34, which has formed therein a number ofholes 35, and the handle 24: is provided with a cooperating hole 37 sothat the handle 2% may be locked in a plurality of positions byinserting a pin through the cooperating holes. Another arm 34 extendsfrom the bracket and is provided with a plurality of holes 36, whichcooperate with a hole 38 in the handle 29, the holes in the handle andarm being arranged to receive a pin to lock the handle in position.

The controlled shaft 10 will bear the entire weight etc. of themechanism which is to be controlled; for instance, the entire weight ofthe nozzle, where the nozzle is the member which is to be shifted.Referring to the position of the parts as shown in Fig. 1, it will beseen that there will be a large frictional resistance between thecooperating jaws 26 and 27, and also between the clutch member 22 andthe key 23. Therefore, if the member which is to be controlled is largea great amount of power will be required to shift the clutch member 22out of engagement with the arm 13. If an attempt be made to shift 22while the entire pressure is on Q2 and 13, it wiil be necessary toresort to heavy reducing gearing, and in such cases the wear on theparts of the coupling will be great. In order to obviate thedisadvantages which would follow if it were necessary to shift theclutch member 22 out of engagement with the arm 13 while the pressure onthe shaft 10 is transmitted to the clutch member, this mechanism hasbeen designed so that the pressure on the clutch member may be relieved.

The operation will now he described.

In the drawings the shaft 10 is shown as coupled with the manuallycontrolling member 13. It will also be seen that the clutch members areindependently shiftable on the shaft. If it is desired to couple theshaft with the governor controlling member 19, the procedure is asfollows: The clutch member 28 is shifted to the left by means of thehandle 29 and the governor is operated in any suitable manner so as toshift the arm 19 until the jaws 31 and 32 are brought into alinement andengagement. The arm 10 is then rotated still further until the pres sureon the shaft 10 is taken up by the arm 19, and in this way the pressureon the clutch member 22 is relieved, and thus this clutch member may beeasily shifted out of clutching position, since practically all frictionhas been eliminated. Similarly, when it is desired to shift thecontrolled shaft from the governor to the hand controlled member, theprocedure is just the reverse from the above. It will, therefore, beseen that this invention provides an arrangement in which the pressureon the clutching memher which is to be disengaged is relieved, and thefrictional resistance to its movements eliminated before said member isshifted.

be made in the details of construction without departing from thisinvention, and it is, therefore, to be understood that this invention isnot to be limited to the specific construction shown and described.

'hat I claim is:

1. The combination with a controlled member, of a plurality ofcontrolling members, means for clutching one of said controlling memberswith said controlled mc1nher and for unclutching another of saidcontrolling members from said controlled member, and for relieving thepressure on said clutching means so as to eliminate frictionalresistance.

2. The combination with a controlled member, of a plurality ofcontrolling members, a clutch for each of said controlling membersarranged to independently clutch said controlling members with saidcontrolled member, and means whereby the pressure on said clutches maybe relieved so as to eliminate frictional resistance to their movements.

3. The combination with a controlled member, of a plurality ofcontrolling mem-' bers, a clutch for each of said controllin membersarranged to independently clutch said controlling members with saidcontrolled member, and means whereby the pressure on one of said clutchmembers may be relieved and transferred to another clutch member, so asto eliminate frictional re sistance to the movementof the relievedclutch member.

4. The combination. with a controlled shaft, of a plurality ofcontrolling members, clutching means sliding on said shaft and arrangedto clutch said controlling members with said shaft, and means wherebythe pressure of said shaft on said clutching means, due to the turningmoment of said shaft, may be relieved so as to eliminate frictionalresistance to the movement of said clutching means on said shaft.

5. The combination with a controlled shaft, of a plurality ofcontrolling members, a plurality of independent clutches sliding on saidshaft and arranged to independently clutch said shaft with saidcontrolling members, and means whereby the pressure of said shaft on oneof said clutches, due to the turning moment of said shaft, may berelieved and transferred to another clutch, so as to eliminatefrictional resistance to the sliding movement of the relieved clutch.

6. The combination with a controlled shaft, of a plurality ofcontrolling members turning loosely on said shaft, a plurality ofindependent clutches sliding on said shaft and arranged to independentlyclutch said shaft with said controlling members, and means whereby thepressure of said shaft on one of said clutches, due to the turningmoment of said shaft, may be relieved and transferred to another clutch,so as to eliminate frictional resistance to the sliding movement of therelieved clutch.

7. The combination with a controlled shaft, of a plurality ofcontrolling arms turning loosely on said shaft and having clutch faces,a plurality of independent clutches sliding on said shaft and havingclutch faces arranged to cooperate with the clutch faces on said arms soas to independently clutch said shaft with said arms, and means wherebythe pressure of said shaft on one of said clutches, due to the turningmoment of said shaft, may be relieved and transferred to another clutch,so as to eliminate frictional resistance to the sliding movement of therelieved clutch.

8. The combination with a controlled member, of governor and manualcontrolling members, means for clutching and unclutching either one ofsaid controlling members with said controlled member. andmeans wherebythe pressure on said clutching means may be rcheved so as to eliminatefrictional resistance.

9. The combination with a controlledanother clutch member, so as toeliminate frictional resistance to the movement of the relieved clutchmember.

10. The combination with a controlled shaft, of a plu'ality ofcontrolling arms turning loosely on said shaft, one of said arms beinggovernor operated, a hand wheel connected to the other arm, a pair ofindependent clutches sliding on said shaft and arranged to independentlyclutch said shaft to said arms, a pair of hand levers mounted adjacentsaid hand wheel to operate said clutches, and means whereby the pressureof said shaft on one of said clutches, due

12. The combination with a controlled shaft, of a plurality ofcontrolling arms turning loosely or said shaft and having clutch faces,a plurality of independent clutches sliding on said shaft between saidarms and having clutch faces arranged to cooperate with the clutch faceson said arms so asto independently clutclrsaid shaft with said arms, thesaid clutches being so related that both cannot be out of engagementwith their arms at the same time.

In testimony whereof I affix my signature in presence of two witnesses.

ILLIAM A. DOBLE. \Vitnesse" FREDERICK GFELLER, LEoroLn M. KARNASCH.

Copies of this patent may be obtained for five cents each, bv addressingthe Commissioner of Patents, Washington, I). C.

